Problem in rooting android 6.0.1 v13.14.0.95

[sergeybr]

Hi, 

I'm trying to root the new Android version (20180712-tinker-board-android-v13.14.0.95)
And I have some problem with the SuperSU.
after the reboot, I try to install the binary files but getting the message the installation failed and to try again

I'm using this script with the files I downloaded from here https://download.chainfire.eu/696/SuperS...-v2.46.zip

Code:

adb shell mount -o rw,remount /system

adb push common/Superuser.apk /system/app/SuperSU/SuperSU.apk  
adb shell chmod 0644 /system/app/SuperSU/SuperSU.apk  
adb shell chcon u:object_r:system_file:s0 /system/app/SuperSU/SuperSU.apk

adb push common/install-recovery.sh /system/etc/install-recovery.sh  
adb shell chmod 0755 /system/etc/install-recovery.sh
adb shell chcon u:object_r:toolbox_exec:s0 /system/etc/install-recovery.sh

adb push armv7/su /system/bin/.ext/.su
adb shell chmod 0755 /system/bin/.ext/.su
adb shell chcon u:object_r:system_file:s0 /system/bin/.ext/.su

adb push armv7/su /system/xbin/daemonsu
adb shell chmod 0755 /system/xbin/daemonsu
adb shell chcon u:object_r:system_file:s0 /system/xbin/daemonsu

adb push armv7/su /system/xbin/sugote
adb shell chmod 0755 /system/xbin/sugote
adb shell chcon u:object_r:zygote_exec:s0 /system/xbin/sugote

adb push rooting/armv7/supolicy /system/xbin/supolicy
adb shell chmod 0755 /system/xbin/supolicy
adb shell chcon u:object_r:system_file:s0 /system/xbin/supolicy

adb push rooting/armv7/libsupol.so /system/lib\(64\)/libsupol.so
adb shell chmod 0755 /system/lib\(64\)/libsupol.so
adb shell chcon u:object_r:system_file:s0 /system/lib\(64\)/libsupol.so


adb shell touch /system/etc/.installed_su_daemon
adb shell chmod 0644 /system/etc/.installed_su_daemon
adb shell chcon u:object_r:system_file:s0 /system/etc/.installed_su_daemon

adb shell cp /system/bin/sh /system/xbin/sugote-mksh
adb shell chmod 0755 /system/xbin/sugote-mksh
adb shell chcon u:object_r:system_file:s0 /system/xbin/sugote-mksh

adb shell cp /system/bin/app_process32 /system/bin/app_process32_original
adb shell chmod 0755 /system/bin/app_process32_original
adb shell chcon u:object_r:zygote_exec:s0 /system/bin/app_process32_original

adb shell mv /system/bin/app_process /system/bin/app_process_original
adb shell chmod 0755 /system/bin/app_process_original
adb shell chcon u:object_r:zygote_exec:s0 /system/bin/app_process_original

adb shell mv /system/bin/app_process32 /system/bin/app_process_init
adb shell chmod 0755 /system/bin/app_process_init
adb shell chcon u:object_r:system_file:s0 /system/bin/app_process_init

adb shell ln -s /system/xbin/daemonsu /system/bin/app_process
adb shell ln -s /system/xbin/daemonsu /system/bin/app_process32

adb shell rm /system/bin/install-recovery.sh
adb shell ln -s /system/etc/install-recovery.sh /system/bin/install-recovery.sh

on the last line (adb shell ln -s /system/etc/install-recovery.sh /system/bin/install-recovery.sh) I'm getting that the error: 
"ln: cannot create symbolic link from '/system/etc/install-recovery.sh' to '/system/bin/install-recovery.sh': File exists"

I tried to ignore it, delete it and replace it but without and different outcome...

[mry]

Use the -f parameter after -s, forces the operation